floss: Link bluetooth-static as whole archive

When linking bluetooth-static, cxxbridge symbols are sometimes not
resolving even though they exist. Using the whole-archive option when
linking this library fixes this issue. For more info:

https://doc.rust-lang.org/rustc/command-line-arguments.html#option-l-link-lib

Bug: 235870415
Tag: #floss
Test: ./build.py with rustc 1.0.68, cxx 1.0.94
Change-Id: I382960c0c8bd4f92b521ab2c2c073bcac6bfb7be